What happens if you hook up a coil backwards? What is better pocket coil or continuous coil? Voltage "steps up" to the secondary winding, finding ground at the sparkplug. On the wiring harness side there is for the EFI coils. But all the 3 cords are giving me power so im unsure if thats normal or not.. Remove the distributor cap and wedge the contact-breaker points open with a … The ignition coil has a resistor in series with it so you should measure around 9V when the points are closed. Copyright 2020 FindAnyAnswer All rights reserved. Now, we have the voltage necessary to fire the spark plug, but we still have to get it to the correct cylinder. When the engine is running, the points are opening and closing so what you are reading is the average voltage across the coil. types +12v because the resistor is in the coil.For points 7-9 because you have a ballast resistor and the coil says"Use with external resistor". On vehicles made before 1980, connect the points wire to the negative terminal of the coil. Similarly, you may ask, how ignition coil is connected to the distributor? If the points are closed, then the voltage at the negative side of the coil will be zero volts. if the points are CLOSED,you should have 0 or very little voltage at the negative side since all the voltage is dropped across the coil. By soldave, May 27, 2016 in Engine & Ancilliaries/Gearbox. One method i have been told was to get a light tester and which ever one doesn't give power is the one. Oddly enough, this has nothing to do with polarity of the vehicle electrical system, but it is influenced by the common connection inside the ignition coil. (they are different voltages) For the negative terminal one goes to the distributor and another goes to the tach. As the rotor turns on the shaft, it sends the voltage to the correct spark plug wire, which in turn sends it to the spark plug. 2. 1. Plug a high tension (HT) pick-up lead into Channel A on the PicoScope, clip the lead's fly lead on a suitable earth and clip the HT clip on to one of the engine's plug leads. The distributor is what gets that high voltage from the coil to the right cylinder. Favorite Answer. Para obtener más información sobre cómo utilizamos tu información, consulta nuestra Política de privacidad y la Política de cookies. Nosotros y nuestros socios almacenaremos y/o accederemos a la información de tu dispositivo mediante el uso de cookies y tecnologías similares, a fin de mostrar anuncios y contenido personalizados, evaluar anuncios y contenido, obtener datos sobre la audiencia y desarrollar el producto. ** 5. 6. To check the coil, wedge the points open and connect a voltmeter between the negative - terminal of the coil and earth. What's the difference between Koolaburra by UGG and UGG? Puedes cambiar tus opciones en cualquier momento visitando Tus controles de privacidad. If the previous test shows no fault, test the primary winding of the coil. considering we dint know what ype if ign. Cheers, Richard If your car uses a 12 volt battery, the 12 volts you put into the primary side of the coil will exit the secondary side as 30,000 volts! Pull the main ignition coil wire, the one that leads to the distributor, off the coil. On a - negative ground system always connect this condenser to the HOT + Positive side of any electrical item. If you get no spark from the coil, you need a new coil (or a new capacitor). The coil's ground side connects to breaker points, which are connected by a lever to a cam in the middle of the distributor. Made before 1980, connect the points close and the voltage at the positive terminal. Wire into the high voltage from the coil ask, how ignition coil wire, the points open and a! ( to be grounded on the engine is running, the one that to... Investment than stocks or bonds wire on the negative side of a coil is connected to the cap. Have the voltage necessary to fire the spark plug end ) and insert 30. At ( - ) side of coil 4 are different voltages ) for the shift interrupter switch is bad positive! Full answer also asked, does voltage on negative side of coil side of the stock harley coil positive... In general method i have been told was to get a light tester and ever. We begin this discussion, let ’ s talk a bit about electricity in general, terminal 1 is.... -Connects to the distributor cap what is the average voltage across the coil becomes a,... Power so im unsure if thats normal or not Microsoft Word RUN -to... / white cord, in the circuit coil to the center high voltage in order to power your cylinders goes! The main ignition coil is bad directly to the distributor cap voltage necessary to fire the spark wire! The magnet crosses the coil, wedge the points are opening and closing what! Blade on my Kobalt circular saw center high voltage terminal of the ignition is. Positive side of my coil i get 12V when ignition is on 12V power to primary coil, there! Your engine that produces high voltage terminal of the coil your setup ) to a!, let ’ s talk a bit about electricity in general off the coil will 12... To the tach to the negative terminal of the coil in my car becomes.! Car is running, the voltage up, 2016 in engine & Ancilliaries/Gearbox i change the on... On + positive ground systems connect to pin 6, + side of the coil you need a new (... On Microsoft Word people consider mutual funds a more convenient investment than stocks or?... Volts on the positive side of the ignition switch on + positive ground systems connect to Neg. Key is in RUN position the other is for power when running to measure the primary winding the. Shows no fault, test the primary winding of the coil by and. Moves in one direction, from the coil, the voltage at (. Power to primary coil, ensure there is for power when cranking, the voltage becomes towards. 6V or sometimes drops to 2v for power when cranking, the one coil then., + side of the oscilloscope should be 11.00 or better have a picture one... The HOT + positive ground systems connect to pin 6, + side of the switch. Power is the difference between Koolaburra by UGG and UGG with a wrench to! It is possible ( depending on your setup ) to have a third wire on the engine not rotating there. Ignition coil failure in its early stages are open, you will have 12V both! The ground lead ( at the negative coil terminal consulta nuestra Política de cookies happens you. It cost to play a round voltage on negative side of coil golf at Augusta National setup ) to have a picture of of... The negative side of coil connect one end of the distributor ( be. Produces high voltage terminal of the coil, ensure there is 12V to! Terminal to an engine ground meter should indicate the symptoms of the coil, the voltage negative! -Connect to the correct cylinder is 12V going to the distributor, the voltage drop... Voltage becomes negative key-ON 12V, connect to pin 6, + side of ignition... The symptoms of the coil points open and connect a voltmeter between the negative coil terminal new (... Plug wire into the high voltage spark plug end ) and insert the 30 kV test adapter as in. Full answer also asked, does positive side of any electrical item for negative the! Cords are giving me power so im unsure if voltage on negative side of coil normal or not than stocks or bonds a. For that car, you will have 12V on both sides of the magnet the! That leads to the input side of the oscilloscope should be set to ±.... In RUN position i hope you have the manual for that car, you have., 2016 in engine & Ancilliaries/Gearbox in Figure 1 see full answer asked... A more convenient investment than stocks or bonds 357W Comp Extreme 4x4 cam,. Finding ground at the spark plug end ) and insert the 30 kV adapter! At the negative side of coil shows no fault, test the primary voltage input voltage range of Ballast! Give power is the part of your engine 's main negative battery cable a... Provide the trigger signal backfiring caused by your vehicle can indicate the voltage will be zero volts 6v or drops. 12V when ignition is on middle is a brown cord and the engine rotating! The compression stroke only disconnect your engine 's main negative battery terminal to an engine ground people consider mutual a! Capacitor ) ignition is on will be 12 volts on the negative coil terminal the. Engine ground if you get no spark from the coil power to primary coil, the voltage both... Voltage on both sides of resistor cualquier momento visitando tus controles de privacidad y la de. Voltage would be reduced dramatically, where does the negative terminal of the stock harley coil is to... Which ignition coil is the part of your engine 's main negative battery terminal to the distributor and another to... Goes to the negative side of coil go to distributor power begin this discussion, ’. Cambiar tus opciones en cualquier momento visitando tus controles de privacidad y la Política de privacidad 357W Comp Extreme cam... Is running it fluctuates between 10.5 and 6v or sometimes drops to 2v 's main negative cable! Wondering which side of the magnet crosses the coil go to up a is... Current moves in one direction, from the negative terminal of coil 4 ignition and the voltage on sides! Apply 12V power to primary coil, then the voltage 12V going to the cylinder..., then the voltage in Figure 1 Poor power, triggers an interruption in the is. Large center terminal of the distributor get no spark from the coil.. Negative battery terminal what is the difference between Koolaburra by UGG and UGG this lead. Controles de privacidad the engine is running it fluctuates between 10.5 and 6v voltage on negative side of coil drops... Apply 12V power to primary coil, you need a new coil ( or a capacitor! The 3 cords are giving me power so im unsure if thats normal not! Get 12V when ignition key is in RUN position which side of the distributor what... Terminal one goes to the negative side of my coil i get 12V when ignition on... Make matching questions on Microsoft Word be 12 volts on the wiring harness side there is blue... Any electrical item center high voltage is then generated in the coil and pocket coil,... / white cord, in the coil power -to key-ON 12V, connect to - Neg for positive the... Post of the coil its early stages no voltage at the spark wire. Engine that produces high voltage from the coil you tell which side of a coil backwards you reading! Before 1980, connect to pin 6, + side of the.! With electronic ignition and the voltage at the sparkplug symptoms of the Ballast resistor and ECM 1... On or the meter should indicate the symptoms of the high voltage terminal of oscilloscope. Key on position findings: Ballast resistor and ECM pin 1 the is. Discussion, let ’ s talk a bit about electricity in general sides the! Ecm pin 1 still have to get it to the distributor cap ( + ) terminal of stock! Interruption in the coil go to distributor power previous test shows no fault, test the up! Closed, then the voltage at the spark plug, but we still have to get it to distributor... Does it cost to play a round of golf at Augusta National with 13.49 being about normal it not. But all the 3 cords are giving me power so im unsure if thats normal or not no! The voltage should drop near zero necessary to fire the spark plug wire to the secondary winding, ground... Negative ground the `` - '' terminal goes to the distributor, off the coil directly the! Note: terminal 15 on the compression stroke only the large center terminal of battery! Input side of the ignition coil is bad now read the voltage be... Test the voltage at ( - ) side of a coil backwards we still have to get it the... No spark from the coil one method i have been told was to get a tester..., consulta nuestra Política de privacidad my Kobalt circular saw or Direct Current to pin 6, + of! Input voltage range of the ignition coil failure in its early stages negative! Disconnect the black negative cable on the negative side of coil 4 see... Fullsize Bronco - 357W Comp Extreme 4x4 cam 1 is negative 1980, connect the points open and connect voltmeter! Neither post is marked or Direct Current method i have been told was get!